Home / 1,123,416.87-1,550,325.60-639,974.85

Finding the Fourth Proportional to 1,123,416.87, 1,550,325.60 and 639,974.85

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Solution

The fourth proportional to 1,123,416.87, 1,550,325.60 and 639,974.85 is: 883,171.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,416.87 : 1,550,325.60 = 639,974.85 : x
  2. Step 2: Convert to fraction form
    1,123,416.87/1,550,325.60 = 639,974.85/x
  3. Step 3: Cross multiply
    1,123,416.87x = 1,550,325.60 × 639,974.85
  4. Step 4: Simplify right side
    1,123,416.87x = 992,169,393,311.16
  5. Step 5: Solve for x
    x = 992,169,393,311.16/1,123,416.87
  6. Step 6: Final answer
    x = 883,171.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.